They included this information about the etymology of the word:

The word "impeccable" has been used in English since at least 1531. It derives  from the Latin word "impeccabilis," a combination of the Latin prefix "in-,"  meaning "not," and the verb "peccare," meaning "to sin." “Peccare” has other  descendents in English. There is "peccadillo," meaning "a slight offense," and  "peccant," meaning "guilty of a moral offense" or simply "faulty." There is also  "peccavi," which comes from Latin, where it literally means "I have sinned," and  which is used in English as a noun meaning "an acknowledgment of sin.”

It is amazing to see how the word has changed in common usage.

If anyone ever tells you that you have "impeccable taste" be sure to share with them Romans 3:23 -

for all have sinned and fall short of the glory of God

We are entirely capable of (and unfortunately all too often do) sin.  Praises to the Supreme God the Holy One who is blessed for His abundant grace and mercy that, through the work of Messiah,  we do not have to pay the penalty due us for our sin.